Delta Dunia Makmur (DOID), parent company of coal mining contractor BUMA, booked net profit of US$37 million last year against loss of US$8.31 million in 2015, thanks to significant improvement in the fourth quarter of 2016. In the quarter, DOID’s sales revenues jumped by 31.6%, while operating profit skyrocketed 130% to US$53.3 million.To subscribe please click here